xnu-6153.141.1.tar.gz

[apple/xnu.git] / bsd / dev / random / randomdev.c

diff --git a/bsd/dev/random/randomdev.c b/bsd/dev/random/randomdev.c
index 6482f6094013a304eaf6166a1f997a936078a036..7e5e10e3ea39578e4b774156b670b77c7c135118 100644 (file)
--- a/bsd/dev/random/randomdev.c
+++ b/bsd/dev/random/randomdev.c
@@ -62,20 +62,20 @@ d_ioctl_t       random_ioctl;
  */
 static struct cdevsw random_cdevsw =
 {
-       random_open,            /* open */
-       random_close,           /* close */
-       random_read,            /* read */
-       random_write,           /* write */
-       random_ioctl,           /* ioctl */
+       random_open,            /* open */
+       random_close,           /* close */
+       random_read,            /* read */
+       random_write,           /* write */
+       random_ioctl,           /* ioctl */
        (stop_fcn_t *)nulldev, /* stop */
        (reset_fcn_t *)nulldev, /* reset */
-       NULL,                           /* tty's */
-       eno_select,                     /* select */
-       eno_mmap,                       /* mmap */
-       eno_strat,                      /* strategy */
-       eno_getc,                       /* getc */
-       eno_putc,                       /* putc */
-       0                                       /* type */
+       NULL,                           /* tty's */
+       eno_select,                     /* select */
+       eno_mmap,                       /* mmap */
+       eno_strat,                      /* strategy */
+       eno_getc,                       /* getc */
+       eno_putc,                       /* putc */
+       0                                       /* type */
 };
 
 
@@ -93,21 +93,20 @@ random_init(void)
                panic("random_init: failed to allocate a major number!");
        }
 
-       devfs_make_node(makedev (ret, RANDOM_MINOR), DEVFS_CHAR,
-               UID_ROOT, GID_WHEEL, 0666, "random", 0);
+       devfs_make_node(makedev(ret, RANDOM_MINOR), DEVFS_CHAR,
+           UID_ROOT, GID_WHEEL, 0666, "random", 0);
 
        /*
         * also make urandom
         * (which is exactly the same thing in our context)
         */
-       devfs_make_node(makedev (ret, URANDOM_MINOR), DEVFS_CHAR,
-               UID_ROOT, GID_WHEEL, 0666, "urandom", 0);
-
+       devfs_make_node(makedev(ret, URANDOM_MINOR), DEVFS_CHAR,
+           UID_ROOT, GID_WHEEL, 0666, "urandom", 0);
 }
 
 int
-random_ioctl(  __unused dev_t dev, u_long cmd, __unused caddr_t data,
-                               __unused int flag, __unused struct proc *p  )
+random_ioctl(   __unused dev_t dev, u_long cmd, __unused caddr_t data,
+    __unused int flag, __unused struct proc *p  )
 {
        switch (cmd) {
        case FIONBIO:
@@ -117,7 +116,7 @@ random_ioctl(       __unused dev_t dev, u_long cmd, __unused caddr_t data,
                return ENODEV;
        }
 
-       return (0);
+       return 0;
 }
 
 /*
@@ -133,15 +132,17 @@ random_open(__unused dev_t dev, int flags, __unused int devtype, __unused struct
         * make sure that we have privledges do so
         */
        if (flags & FWRITE) {
-               if (securelevel >= 2)
-                       return (EPERM);
+               if (securelevel >= 2) {
+                       return EPERM;
+               }
 #ifndef __APPLE__
-               if ((securelevel >= 1) && proc_suser(p))
-                       return (EPERM);
-#endif /* !__APPLE__ */
+               if ((securelevel >= 1) && proc_suser(p)) {
+                       return EPERM;
+               }
+#endif  /* !__APPLE__ */
        }
 
-       return (0);
+       return 0;
 }
 
 
@@ -152,7 +153,7 @@ random_open(__unused dev_t dev, int flags, __unused int devtype, __unused struct
 int
 random_close(__unused dev_t dev, __unused int flags, __unused int mode, __unused struct proc *p)
 {
-       return (0);
+       return 0;
 }
 
 
@@ -161,29 +162,32 @@ random_close(__unused dev_t dev, __unused int flags, __unused int mode, __unused
  * prng.
  */
 int
-random_write (dev_t dev, struct uio *uio, __unused int ioflag)
+random_write(dev_t dev, struct uio *uio, __unused int ioflag)
 {
-    int retCode = 0;
-    char rdBuffer[256];
-
-    if (minor(dev) != RANDOM_MINOR)
-       return EPERM;
-
-    /* Security server is sending us entropy */
-
-    while (uio_resid(uio) > 0 && retCode == 0) {
-        /* get the user's data */
-        int bytesToInput = MIN(uio_resid(uio),
-                              (user_ssize_t) sizeof(rdBuffer));
-        retCode = uiomove(rdBuffer, bytesToInput, uio);
-        if (retCode != 0)
-           break;
-       retCode = write_random(rdBuffer, bytesToInput);
-        if (retCode != 0)
-           break;
-    }
-
-    return retCode;
+       int retCode = 0;
+       char rdBuffer[256];
+
+       if (minor(dev) != RANDOM_MINOR) {
+               return EPERM;
+       }
+
+       /* Security server is sending us entropy */
+
+       while (uio_resid(uio) > 0 && retCode == 0) {
+               /* get the user's data */
+               int bytesToInput = MIN(uio_resid(uio),
+                   (user_ssize_t) sizeof(rdBuffer));
+               retCode = uiomove(rdBuffer, bytesToInput, uio);
+               if (retCode != 0) {
+                       break;
+               }
+               retCode = write_random(rdBuffer, bytesToInput);
+               if (retCode != 0) {
+                       break;
+               }
+       }
+
+       return retCode;
 }
 
 /*
@@ -198,12 +202,13 @@ random_read(__unused dev_t dev, struct uio *uio, __unused int ioflag)
        user_ssize_t bytes_remaining = uio_resid(uio);
        while (bytes_remaining > 0 && retCode == 0) {
                int bytesToRead = MIN(bytes_remaining,
-                                     (user_ssize_t) sizeof(buffer));
+                   (user_ssize_t) sizeof(buffer));
                read_random(buffer, bytesToRead);
 
                retCode = uiomove(buffer, bytesToRead, uio);
-               if (retCode != 0)
+               if (retCode != 0) {
                        break;
+               }
 
                bytes_remaining = uio_resid(uio);
        }
@@ -218,13 +223,14 @@ u_int32_t
 RandomULong(void)
 {
        u_int32_t buf;
-       read_random(&buf, sizeof (buf));
-       return (buf);
+       read_random(&buf, sizeof(buf));
+       return buf;
 }
 
 
 int
-getentropy(__unused struct proc * p, struct getentropy_args *gap, __unused int * ret) {
+getentropy(__unused struct proc * p, struct getentropy_args *gap, __unused int * ret)
+{
        user_addr_t user_addr;
        uint32_t user_size;
        char buffer[256];